Q. Which among the following is the most crucial step of the Calvin cycle?
Solution:
Calvin cycle occurs in stroma of chloroplast in which fixation of to form glucose occurs.
There are three major steps of in Calvin cycle (C3 cycle) which are as follows:
- Carboxylation– Carboxylation is the fixation of CO2 right into a solid natural intermediate. Carboxylation is the most critical step of the Calvin cycle, wherein CO2 is utilized for the carboxylation of RuBP. This response is catalyzed by way of the enzyme RuBP carboxylase, which results in the formation of molecules of 3-PGA. Seeing that this enzyme also has an oxygenation activity it might be greater accurate to call it RuBP carboxylase-oxygenase or RuBisCO.
- Reduction– These are a series of reactions that lead to the formation of glucose. The stairs contain the utilization of two molecules of ATP for phosphorylation and two of NADPH for reduction according to the CO2 molecule constant. The fixation of six molecules of CO2 and six turns of the cycle is required for the elimination of one molecule of glucose from the pathway.
- Regeneration– Regeneration of the CO2 acceptor molecule RuBP is critical if the cycle is to preserve uninterrupted. The regeneration steps require one ATP for phosphorylation to shape RuBP.
There are three major steps of in Calvin cycle (C3 cycle) which are as follows:
- Carboxylation– Carboxylation is the fixation of CO2 right into a solid natural intermediate. Carboxylation is the most critical step of the Calvin cycle, wherein CO2 is utilized for the carboxylation of RuBP. This response is catalyzed by way of the enzyme RuBP carboxylase, which results in the formation of molecules of 3-PGA. Seeing that this enzyme also has an oxygenation activity it might be greater accurate to call it RuBP carboxylase-oxygenase or RuBisCO.
- Reduction– These are a series of reactions that lead to the formation of glucose. The stairs contain the utilization of two molecules of ATP for phosphorylation and two of NADPH for reduction according to the CO2 molecule constant. The fixation of six molecules of CO2 and six turns of the cycle is required for the elimination of one molecule of glucose from the pathway.
- Regeneration– Regeneration of the CO2 acceptor molecule RuBP is critical if the cycle is to preserve uninterrupted. The regeneration steps require one ATP for phosphorylation to shape RuBP.